OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:2a:9a:2f:13:d4:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:e5:f4:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ee:6e:c5:2c:ac:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:82:74:d8:74:4b:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:e5:f4:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
